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Sina and China Merchant’s Bank will launch a social credit card for Weibo DaRen users at the end of August. Sina is in non-stop experimentation mode as it tries to monetize Weibo. Here’s the scoop. What are DaRen Users? One year ago Sina Weibo launched “DaRen” as form of user verification. It’s designed to prompt users to input their real information and personal interests: each DaRen user has a ranking system based on how active and in which fields. DaRen (达人) is a group of real name verified users in Sina Weibo. Unlike the more celebrity-ish ‘verified users’, these people are the commoners of the digital space. Each DaRen picks three personal interests such as music, film or travel. That way Sina can match users to shared interests. This is perhaps the most successful addition that Sina Weibo has made since launch. Today the DaRen user group is 4 million strong and 90% o...